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Carbon Neutral Production of Syngas via High Temperature Electrolytic Reduction of Steam and CO2

[+] Author Affiliations
C. Stoots, J. O’Brien

Idaho National Laboratory, Idaho Falls, ID

J. Hartvigsen

Ceramatec Inc., Salt Lake City, UT

Paper No. IMECE2007-43667, pp. 185-194; 10 pages
  • ASME 2007 International Mechanical Engineering Congress and Exposition
  • Volume 15: Sustainable Products and Processes
  • Seattle, Washington, USA, November 11–15, 2007
  • Conference Sponsors: ASME
  • ISBN: 0-7918-4309-2 | eISBN: 0-7918-3812-9
  • Copyright © 2007 by ASME


This paper presents the most recent results of experiments conducted at the Idaho National Laboratory (INL) studying coelectrolysis of steam and carbon dioxide in solid-oxide electrolysis stacks. Two 10-cell planar stacks were tested under various gas compositions, operating voltages, and operating temperatures. The tests were heavily instrumented, and outlet gas compositions were monitored with a gas chromatograph. Measured outlet compositions, open cell potentials, and coelectrolysis thermal neutral voltages compared reasonably well with a coelectrolysis computer model developed at the INL. Stack ASRs did not change significantly when switching from electrolysis to coelectrolysis operation.

Copyright © 2007 by ASME



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